摘要
针对用单故障策略诊断多故障时可能出错的原因,提出一种确定性的,效率较高的求解掩盖故障的算法;首先通过定义寻找系统中可能存在的隐藏故障集;然后在隐藏故障集中寻找可能存在掩盖故障的故障元件集以及冲突集;其次通过建立冲突集簇的相关矩阵,把求解冲突集簇掩盖故障的问题转换为求解集合覆盖,并用确定性方法DNA粘贴模型来求解,获得全部真实解;最后通过实例验证,该方法是一种并行算法,可行、简单、有效。
Aiming at multiple fault diagnosis strategy problems, an algorithm to computing masking false failure sets is proposed in this paper. Firstly, the potential hidden failure sets in the system are found by using definition, then the potential fault component sets of masking false failure and conflict sets are searched from hidden failure sets. Secondly, by the establishment of dependency matrix of conflict sets cluster, it can convert the problem for computing the hitting sets to set cover problem. And then the all true solution can be achieved by using DNA-sticker mode[ of certain method. Finally, an example is to verify that the method is feasible, simple, and effective.
出处
《计算机测量与控制》
CSCD
北大核心
2010年第4期804-806,共3页
Computer Measurement &Control
关键词
冲突集
极小碰集
隐藏故障
掩盖故障
DNA模型
conflict set
minimal hitting set
hidden failure
false failure
DNA model
作者简介
王红霞，女，博士研究生，主要从事测试性分析、故障诊断方面的研究。
叶晓慧，男，博士生导师，主要从事故障诊断、网络传感器等方面的研究。
